Speed-indicator.



L. T. JENSEN.

SPEED INDICATOR.

APPLICATION FILED MAB..18, 1914.

1,125,333, Patented Jan. 19, 1915.

561mm. mm; an,

frame of the cream separator.

'LOUIS T, JENSEN, OF MINNEAPOLIS, MINNESOTA.

' SPEED-INDICATOR.

Application filed March is, 1914. Serial no; 325,553.

tion of'the invention, such as-will enable others skilled-in the arttowhich it appertains to make and use the same.

' My present inventioli'relates to speed indidators, and in some respects; is inthe nature of an improvement on the speed indicator disclosedand claimed in my pending application-'799,321-, filed-of date, November 5th, 1913, andin' other respects, the present invention involves features-capable of much wider'jrange'of-application in speed indicat0rs."--'

din 'the accompanying drawings which illustrate the invention,-like characters indicate like parts throughout the several views. I

Referring to the drawings: Figure 1 is a view partly in side elevation and partly in verticalsection showing the improved speed indicator; Fig. 2 is a front elevation of the indicator, some parts being broken away; and Fig. 3-is a horizontal section taken on the linear in on Fig-1r The crank shaft of the driving mechanism of the cream separator, or similar machine, is indicated by the numeral 1. 'This crank shaft 1 may be assumed to be driven by hand power through a suitable crank, not shown, such for example, as usually provided in cream separators. The said crank is journaled in suitable bearings of a casing 2 which may be suitably secured to the In the arrangement illustrated, the crank shaft '1 carries a worm gear 8 that meshes with a worm 4 of an upright spindle 5, that is j ournaled in suitable bearings afforded by a sleeve-like portion 6 of the casin 2. Allannular bearing head 7 is swivele on the upwardly extended end of the sleeve-like bearing 6, and is adapted to be held in any desired position by a set screw 8. As shown,

the head 7 carries a centrifugal governor and a casing 9 having a cover 10. The upper end of the spindle 5 is reduced at 5*, and to the upper end of its reduced portion is secured a transversely extended head 11,

Specification of Letters Patent.

Patented Jan. 19, 1915.

to the ends of which, bell crank levers 12 are pivotally-attached at their elbows, and, to the upper-arms of the bell cranks 12, fly balls 13 are attached, and these fly balls are connected by a so-called primary coiled spring or springs 14, which springs tend to draw the fly balls toward 'each other. The inwardly extended lower arms of the bell cranks 12, work in a peripheral groove of a sleeve or collar 15 that is loosely mounted on the'reduced portion 5 ofthe spindle I 5 with-freedom for rotation of the said spindle, in respect to the said sleeve and with freedom for sliding movement I of the said sleeve on the said spindle.

- Secured on the governor casing or housing 9 isa graduatedsegmental dial 16. A pointer 17 cooperates with the dial," and this-pointer is secured to the outer end of a short rook shaft 18' journaled in the bearing 'head 7 and projecting inward toward the reduced end of the spindle 5. To the inner end of the rock shaft 18 is secured a short arm 19 provided at its free end with an eye or perforation that is engaged by a short rod or finger 20, secured to the governor actuated sleeve 15 and projecting outward therefrom. The dial 16 should, of course, be properly graduated to indicate within a certain limit, the number of rotations of the :driving shaft 1. spindle 5 is rotated and the governor is thrown into action, the engagement between the rod 20 and arm 19 holds the sleeve 15 against rotation, but with freedom for axial or sliding movements on the reduced end 2 When the r of the spindle 5, and at such times, the inwardly extended arms of the bell crankslQ move within the groove of the said sleeve and control its sliding movements.

To set the governor: for accurate speed indication requires a nice adjustment of the springs which tend to. throw the fly balls 13 radially inward, or toward each other. The adjustment of the springs 14: is not an easy matter at any time, and is impossible while casing where it is accessible, and connected to the said pointer by means of a rod 22 having a spring adjusting nut 23. One end of this rod 22 is pivotally attached to the pointer 17 and the said rod works loosely through a perforation in an arm 24 that is rigidly secured to and projects from the bearing head 7. The spring 21 is compressed between the said arm and the nut 23. Evidently, with this arrangement, the tension of the auxiliary spring 21 may be varied at will while the governor is in action. It is also important to note that both elements of the speed indicator, to-wit, the dial and cooperating pointer, and the connections between the pointer and the sleeve 15, are all mounted on a common support, to-wit, as shown, on the bearing head 7, or the extended casing 9 thereof. With this construction, it follows that the dial and pointer may be turned or oscillated hori zontally into any desired position without in any way changing the relative adjustment of the governor, and for that matter, without requiring the governor to be thrown out of action. This adjustment of all of the parts of the governor as an entirety, is important for several reasons, among the most important of which it may be mentioned the fact that in applying the governor to diiferent cream separators or analogous machines, adjustments of the position of the indicator to different positions will be required.

-What I claim is:

1. In a speed indicator, the combination with a rotary spindle and a centrifugal governor driven thereby, said governor including a main spring incorporated therein, of

- indicating means comprising a cooperating dial and a pointer, the one member of said means having a movement in respect to the other, and the movable member being subject to said centrifugal governor, and an auxiliary spring tension device, operative on the said movable member'and reinforcing the action of said main spring of the governor, and itself having a screw-threaded tension-adjusting element, arranged to be and at the exterior of said casing, a pointer 0 cooperating with said dial and having a shaft j ournaled in said bearing head and extended inward and provided with an-arm at its inner end, and a sleeve loosely mounted on said spindle and connectedto the said arm for oscillating said pointer, said sleeve having a peripheral groove in which the inner ends of the fly ball arms are engaged.

3. In aspeed indicator, the combination with a rotary spindle, andacentrifugal governorcarried thereby, said governor comprising levers and fly balls and a main spring for holding said fly balls inward against the action of centrifugal force, of a bearing head mounted for rotary adjustments around said spindle and 2 provided with a casing inclosing governor, a dial sup ported by and at the exterior of said casing, a. pointer cooperating with said dial and having a shaft journaled in said bearing 80 head and extended inward and provided with arms at its inner end, and a sleeve loosely mounted on said spindle and connected to the said arms for oscillating said pointer, said sleeve having a peripheral groove in which the inner endsv of the fly ball arms are engaged, and an adjustable auxiliary spring anchored to the exterior of said casing and connected to said pointer.

In testimony whereof I aifix my signature 90 in presence of two witnesses.

LOUIS T. JENSEN. Witnesses:

EVA E. Kome, HARRY D. KILGORE. 

